After downloading the Oracle Database 11g Release 2 (11.2) documentation, I extracted the tar file to "D:\Documentations\Oracle Database 11g Release 2 (11.2)" directory, and under this directory, there is a file called index.htm. When I open this file in a browser, the "Oracle Database Documentation Library 11g Release 2 (11.2)" page appear. On the top left of this page, there is a search button, but it does not work. The browser will throw the following error:
Sorry, "tahiti-stage.us.oracle.com" does not exist or could not be found

Can anyone please advice if there a way to fix this search issue. Thank you very much in advance.

At the moment, I'm relying on http://tahiti.oracle.com/, but at times, this site can be quite slow.

Thank you for this alert. A fixed version of the zip has been posted. The problem has existed since last Thursday's update. (Update details are in the RSS feed: http://www.oracle.com/pls/db112/new_html ) There is no offline search capability for the Database documentation so the correct behavior -- and the behavior in the recently updated zip -- is to direct queries to Tahiti as you are already doing.